JPS62216717A - Manufacture of crystalline polyolefine resin sheet or film - Google Patents
Manufacture of crystalline polyolefine resin sheet or filmInfo
- Publication number
- JPS62216717A JPS62216717A JP61059548A JP5954886A JPS62216717A JP S62216717 A JPS62216717 A JP S62216717A JP 61059548 A JP61059548 A JP 61059548A JP 5954886 A JP5954886 A JP 5954886A JP S62216717 A JPS62216717 A JP S62216717A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- cooling
- sheet
- sheetlike
- thing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 229920005989 resin Polymers 0.000 title abstract description 16
- 239000011347 resin Substances 0.000 title abstract description 16
- 229920000098 polyolefin Polymers 0.000 title abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 62
- 239000002826 coolant Substances 0.000 claims abstract description 10
- 239000000498 cooling water Substances 0.000 claims abstract description 10
- 229920005672 polyolefin resin Polymers 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 3
- 229920002050 silicone resin Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 22
- 238000007711 solidification Methods 0.000 abstract description 4
- 230000008023 solidification Effects 0.000 abstract description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052731 fluorine Inorganic materials 0.000 abstract 1
- 239000011737 fluorine Substances 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000002667 nucleating agent Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- -1 polypropylene Polymers 0.000 description 5
- 229920005629 polypropylene homopolymer Polymers 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- FMZUHGYZWYNSOA-VVBFYGJXSA-N (1r)-1-[(4r,4ar,8as)-2,6-diphenyl-4,4a,8,8a-tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxin-4-yl]ethane-1,2-diol Chemical compound C([C@@H]1OC(O[C@@H]([C@@H]1O1)[C@H](O)CO)C=2C=CC=CC=2)OC1C1=CC=CC=C1 FMZUHGYZWYNSOA-VVBFYGJXSA-N 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 229940087101 dibenzylidene sorbitol Drugs 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- QIVUCLWGARAQIO-OLIXTKCUSA-N (3s)-n-[(3s,5s,6r)-6-methyl-2-oxo-1-(2,2,2-trifluoroethyl)-5-(2,3,6-trifluorophenyl)piperidin-3-yl]-2-oxospiro[1h-pyrrolo[2,3-b]pyridine-3,6'-5,7-dihydrocyclopenta[b]pyridine]-3'-carboxamide Chemical compound C1([C@H]2[C@H](N(C(=O)[C@@H](NC(=O)C=3C=C4C[C@]5(CC4=NC=3)C3=CC=CN=C3NC5=O)C2)CC(F)(F)F)C)=C(F)C=CC(F)=C1F QIVUCLWGARAQIO-OLIXTKCUSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- UBRWPVTUQDJKCC-UHFFFAOYSA-N 1,3-bis(2-tert-butylperoxypropan-2-yl)benzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC(C(C)(C)OOC(C)(C)C)=C1 UBRWPVTUQDJKCC-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241000628997 Flos Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- AYOOGWWGECJQPI-NSHDSACASA-N n-[(1s)-1-(5-fluoropyrimidin-2-yl)ethyl]-3-(3-propan-2-yloxy-1h-pyrazol-5-yl)imidazo[4,5-b]pyridin-5-amine Chemical compound N1C(OC(C)C)=CC(N2C3=NC(N[C@@H](C)C=4N=CC(F)=CN=4)=CC=C3N=C2)=N1 AYOOGWWGECJQPI-NSHDSACASA-N 0.000 description 1
- XULSCZPZVQIMFM-IPZQJPLYSA-N odevixibat Chemical compound C12=CC(SC)=C(OCC(=O)N[C@@H](C(=O)N[C@@H](CC)C(O)=O)C=3C=CC(O)=CC=3)C=C2S(=O)(=O)NC(CCCC)(CCCC)CN1C1=CC=CC=C1 XULSCZPZVQIMFM-IPZQJPLYSA-N 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/9175—Cooling of flat articles, e.g. using specially adapted supporting means by interposing a fluid layer between the supporting means and the flat article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
- B29C48/9155—Pressure rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
- B29C48/917—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means by applying pressurised gas to the surface of the flat article
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は透明性に優れた結晶性ポリオレフィン樹脂シー
トまたはフィルムに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a crystalline polyolefin resin sheet or film with excellent transparency.
従来結晶性ポリオレフィン樹脂シートまたはフィルム、
特に厚みが1.0+am以下の結晶性ポリオレフィン+
H脂シートまたはフィルムは一般にエアーナイフ方式に
より製造されているが、製造されたシートまたはフィル
ムは、機械的特性は優れているものの透明性が不充分で
、その用途が制限されてきた。透明性の改良技術として
は、バラ−ターシャリ−ブチル安息香酸アルミニウム、
ジベンジリデンソルビトールなどの造核剤を添加する方
法、あるいはエアーナイフ方式のかわりに溶融シートの
両面を鏡面仕上げされた一対の全屈冷却ロールにより挟
圧固化して冷却ロールの鏡面をシート両面に転写させる
方法が知られている。Conventional crystalline polyolefin resin sheet or film,
Especially crystalline polyolefin with a thickness of 1.0+am or less+
H fat sheets or films are generally produced by the air knife method, but although the produced sheets or films have excellent mechanical properties, they have insufficient transparency, and their uses have been limited. Transparency improvement techniques include aluminum bara-tertiary-butylbenzoate;
A method of adding a nucleating agent such as dibenzylidene sorbitol, or instead of the air knife method, both sides of the molten sheet are compressed and solidified using a pair of mirror-finished full-bending cooling rolls, and the mirror surface of the cooling rolls is transferred to both sides of the sheet. There are known ways to do this.
前記改良技術において、造核剤を添加した場合はある程
度の改良効果は見られるが十分な透明性は得られない。In the above-mentioned improved technique, when a nucleating agent is added, some improvement effect can be seen, but sufficient transparency cannot be obtained.
また、溶融シートの両面を一対の金属冷却ロールにより
挟圧固化する方法は造核剤添加と併用される事が多いが
、その方法ではシートが0.5m以上の厚みを有するも
のでは均一に挟圧固化する事が可能であるが、シート厚
みが0.5鶴より小さいものではシートの均一な挟圧固
化が困難となり、シートに挟圧ムラを生じ透明なシート
は得られない。また、樹脂コゲや空中よりの塵埃などが
冷却ロール間に挟圧されるとロール鏡面に傷が人ね、シ
ートに傷が転写され透明性をそこなう事がある。Additionally, a method in which both sides of a molten sheet are compressed and solidified using a pair of metal cooling rolls is often used in conjunction with the addition of a nucleating agent, but this method does not allow uniform compression if the sheet has a thickness of 0.5 m or more. Although it is possible to compact the sheet, if the sheet thickness is less than 0.5 mm, it becomes difficult to uniformly compact the sheet, causing uneven pressure on the sheet and making it impossible to obtain a transparent sheet. In addition, if resin burnt or dust from the air is squeezed between the cooling rolls, the mirror surface of the rolls may be scratched, and the scratches may be transferred to the sheet, impairing its transparency.
本発明の目的は、優れた透明性を示す結晶性ポリオレフ
ィン樹脂シートあるいはフィルム、特に厚みが1.0龍
以下の結晶性ポリオレフィン樹脂シートあるいはフィル
ムを製造する方法を提供することにある。An object of the present invention is to provide a method for producing a crystalline polyolefin resin sheet or film exhibiting excellent transparency, particularly a crystalline polyolefin resin sheet or film having a thickness of 1.0 mm or less.
本発明者らは、上記目的を達成すべく鋭意検討した結果
、本発明に到達した。The present inventors have arrived at the present invention as a result of intensive studies to achieve the above object.
すなわち本発明は
結晶性ポリオレフィン樹脂を、溶融状態でTダイを通し
てシート伏に押し出し、冷却ロールで冷却固化させる結
晶性ポリオレフィン樹脂シートまたはフィルムの製造方
法において、Tダイより押し出されたシーI・状物をエ
アーナイフにより冷却ロール上に密着させ、さらにタッ
チロールで該シート状物の冷却ロールとの非接触面側を
押圧した後、該シート状物に冷却固化によりフロストラ
インが生じるまでに該シート状物の冷却ロールとの非接
触面側を冷却剤により冷却することを特徴とする透明性
の結晶性ポリオレフィン樹脂シートまたはフィルムの製
造方法である。That is, the present invention relates to a method for producing a crystalline polyolefin resin sheet or film in which a crystalline polyolefin resin is extruded in a molten state through a T-die into a sheet, and then cooled and solidified using a cooling roll. is brought into close contact with the cooling roll using an air knife, and the non-contact side of the sheet-like material with the cooling roll is pressed using a touch roll. This is a method for producing a transparent crystalline polyolefin resin sheet or film, characterized in that the side of the object that does not come into contact with a cooling roll is cooled with a coolant.
本発明の方法において結晶性ポリオレフィン樹脂として
は、たとえば、ポリプロピレン、ポリエチレン、プロピ
レンと小量のα−オレフィンとの共重合体、ポリブテン
などが挙げられ、さらにはまたこれらの結晶性ポリオレ
フィン樹脂を有機過酸化物で熱誠性した物も挙げられる
。また前記結晶性ポリオレフィン樹脂には、造核剤、酸
化防止剤、帯電防止剤、水添石油樹脂、スリップ剤など
を含んでいても良く、かえって造核剤、水添石油樹脂を
含んでいるか、または前記熱誠性された結晶性ポリオレ
フィン樹脂に造核剤を含んでいると透明性がより向上す
るので好ましい。Examples of the crystalline polyolefin resin used in the method of the present invention include polypropylene, polyethylene, a copolymer of propylene and a small amount of α-olefin, polybutene, and furthermore, these crystalline polyolefin resins can be treated with an organic filtrate. Also included are oxides that are fervent. The crystalline polyolefin resin may also contain a nucleating agent, an antioxidant, an antistatic agent, a hydrogenated petroleum resin, a slip agent, etc., or may contain a nucleating agent, a hydrogenated petroleum resin, or the like. Alternatively, it is preferable that the heat-hardened crystalline polyolefin resin contains a nucleating agent because transparency is further improved.
本発明の方法においては、Tダイから押し出された溶融
シートを、エアーナイフにより冷却ロールに密着させ、
さらにタフチロールで該シートの冷却ロールとの非接触
面側を押圧した後、溶融シートが冷却ロールにより冷却
固化する以前、すなわちフロストライン以前で冷却剤に
より冷却ロールとの非接触面側から十分に冷却すること
が重要であって、かくして著しく透明性に優れた結晶性
ポリオレフィン樹脂シートまたはフィルムが得られる。In the method of the present invention, the molten sheet extruded from the T-die is brought into close contact with a cooling roll by an air knife,
Furthermore, after pressing the non-contact side of the sheet with a taft roll, the molten sheet is sufficiently cooled from the side of the non-contact side with the cooling roll by a coolant before it is cooled and solidified by the cooling roll, that is, before the frost line. It is important to do this, and in this way a crystalline polyolefin resin sheet or film with extremely excellent transparency can be obtained.
この際フロストライン以後に冷却しても透明性の改良効
果はないが、装置の都合などでフロストラインを越えて
冷却を続けることは何ら差し支えはない。At this time, cooling after the frost line does not improve transparency, but there is no problem in continuing cooling beyond the frost line depending on the equipment.
溶融シートは一般のTダイ付押出装置より押し出される
。押出温度は各樹脂の常用押出温度であって、例えばポ
リプロピレン樹脂の場合は210〜300℃の範囲が普
通で、なかでも250〜290℃の範囲が好ましい。The molten sheet is extruded using a general extrusion device equipped with a T-die. The extrusion temperature is a commonly used extrusion temperature for each resin, and for example, in the case of polypropylene resin, it is usually in the range of 210 to 300°C, and preferably in the range of 250 to 290°C.
本発明の方法において用いられるエアーナイフは、一般
のエアーナイフ方式に使用されるものと同一で、冷却ロ
ール上に溶融シートを密着し得るものであれば良く、特
に限定はされない。The air knife used in the method of the present invention is not particularly limited as long as it is the same as that used in general air knife methods and can bring the molten sheet into close contact with the cooling roll.
本発明の目的である透明性の向上のためには、エアーナ
イフにより溶融シートを冷却ロールに密着させることも
肝要で、エアーナイフによる密着を省くと溶融シートと
冷却ロールの間に空気が巻き込まれるという問題を生じ
、均一な厚膜のシートまたはフィルムを得ることが困難
となる。特にM膜速度が大きくなるとこの傾向が強くな
る。In order to improve transparency, which is the objective of the present invention, it is important to bring the molten sheet into close contact with the cooling roll using an air knife. If the air knife is not used, air will be caught between the molten sheet and the cooling roll. This causes the problem that it becomes difficult to obtain a uniformly thick sheet or film. In particular, this tendency becomes stronger as the M film speed increases.
冷却ロールの温度は常用の温度が用いられるが、溶融シ
ートがロールの鏡面を転写する限りできるだけ低く設定
する方が望ましく、例えばポリプロピレン樹脂の場合は
30〜100℃、好ましくは50〜90℃の温度が用い
られる。The temperature of the cooling roll is a commonly used temperature, but it is desirable to set it as low as possible as long as the mirror surface of the roll is transferred to the molten sheet; for example, in the case of polypropylene resin, the temperature is 30 to 100°C, preferably 50 to 90°C. is used.
またシートの厚みは0.1〜2.On+が望ましく、好
ましくは0.2〜1.5 l1mの範囲である。Also, the thickness of the sheet is 0.1 to 2. On+ is desirable, preferably in the range of 0.2 to 1.5 l1m.
本発明に用いられるタッチロールとしては、溶融シート
の冷却ロールと接触していない面に鏡面を転写し得るも
のであればいかなるものでも良いが、殊に好ましいクツ
チロールは鏡面を有する弾性ロールである。すなわち本
発明に使用されるタッチロールは金泥ロールでも差し支
えないが、金泥ロールに比べて適度な弾性を有し、シー
トに挟圧ムラが生じた場合ロールが変形することにより
挟圧ムラを吸収してシートを均一なタッチで挟圧する弾
性ロールを用いることが殊に好ましい。The touch roll used in the present invention may be of any type as long as it can transfer a mirror surface to the surface of the molten sheet that is not in contact with the cooling roll, but a particularly preferred touch roll is an elastic roll having a mirror surface. In other words, the touch roll used in the present invention may be a gold mud roll, but it has moderate elasticity compared to a gold mud roll, and when uneven pressure occurs on the sheet, the roll deforms to absorb the uneven pressure. It is particularly preferable to use elastic rolls that pinch the sheet with a uniform touch.
このようなロールとしては例えばゴムロールにフッ素樹
脂の膜を被覆したもの、あるいはゴムロールにシリコン
樹脂をコーティングしたものなどが挙げられる。この際
フッ素樹脂は製膜可能なものであればいかなるものでも
良いが特にパーフルオロアルキルビニルエーテル−テト
ラフルオロエチレン共重合体が好ましい。ゴムロールに
フッ素樹脂膜を被覆する方法としては筒状のフッ素樹脂
のシートあるいはフィルムをゴムロールに被せた後熱収
縮させる方法が簡便である。Examples of such a roll include a rubber roll coated with a fluororesin film, or a rubber roll coated with a silicone resin. At this time, the fluororesin may be any fluororesin as long as it can be formed into a film, but perfluoroalkyl vinyl ether-tetrafluoroethylene copolymer is particularly preferred. A convenient method for coating a rubber roll with a fluororesin film is to cover the rubber roll with a cylindrical fluororesin sheet or film and then heat-shrink it.
なおタッチロールの押圧としては0.005〜20kg
/cm2.好ましくは0.05〜10kg/ cm2が
適当であり、製造されるシートあるいはフィルムの厚み
などにより適宜決定される。The pressure of the touch roll is 0.005 to 20 kg.
/cm2. The weight is preferably 0.05 to 10 kg/cm2, and is appropriately determined depending on the thickness of the sheet or film to be manufactured.
本発明の方法の冷却剤による冷却を実施する装置として
は、タッチロールで押圧した溶融シートを、フロストラ
イン以前において、溶融シートの冷却ロールとの非接触
面側で十分に冷却し得る装置であれば何でもよく、特に
限定されるものではない。また、冷却剤としては、水、
氷、各種冷媒があげられるが特に水が好ましく、水を用
いる場合はその温度を0〜30℃とする事が望ましい。The apparatus for cooling the molten sheet with the coolant in the method of the present invention may be any apparatus that can sufficiently cool the molten sheet pressed by the touch roll on the side of the molten sheet that is not in contact with the cooling roll before the frost line. It may be anything, and is not particularly limited. In addition, as a coolant, water,
Examples include ice and various refrigerants, but water is particularly preferred, and when water is used, it is desirable that the temperature is 0 to 30°C.
殊に冷却剤として水を用い、広幅スリットより水を該シ
ートに直接当てて冷却する方法は好ましい方法である。In particular, a preferred method is to use water as a coolant and cool the sheet by directly applying the water to the sheet through a wide slit.
こ\に広幅スリットは溶融シートの幅方向に、かつスリ
ットの先端から均一に冷却水を直接シートに当て得るも
のであれば良く、例えば別のエアーナイフを使用してエ
アーのかわりに冷却水を供給するなども一つの方法であ
る。The wide slit can be used as long as it can apply cooling water directly to the sheet in the width direction of the molten sheet and evenly from the tip of the slit. For example, you can use another air knife to apply cooling water instead of air. One method is to supply it.
本発明の方法を実施する装置の一例を第1図に示す。An example of an apparatus for carrying out the method of the present invention is shown in FIG.
Tダイ1より押し出された溶融シートは、エアーナイフ
2により第1冷却ロール3に密着された後タッチロール
4によって鏡面が転写され、第2冷却ロール5を通して
引取機の方へ引き取られる。The molten sheet extruded from the T-die 1 is brought into close contact with a first cooling roll 3 by an air knife 2, a mirror surface is transferred by a touch roll 4, and the sheet is taken through a second cooling roll 5 toward a take-off machine.
鏡面が転写された溶融シートは第1冷却ロールとの非接
触面側で、かつ冷却固化によるフロストライン6が生じ
る以前の場所で、広幅スリット7を通して冷却水8を直
接当てて冷却される。使用ずみの冷却水は水受器9に集
められ、冷凍ポンプ10で循環使用される。The molten sheet on which the mirror surface has been transferred is cooled by directly applying cooling water 8 through a wide slit 7 on the non-contact surface side with the first cooling roll and before the frost line 6 is formed due to cooling and solidification. The used cooling water is collected in a water receiver 9 and circulated by a refrigeration pump 10.
なおこ\にフロストラインとはエアーナイフとタフチロ
ールのみを使用した時に観察される溶融シートの冷却固
化点をいう。Note that the frost line refers to the cooling solidification point of a molten sheet observed when using only an air knife and a taft roll.
以下、本発明を実施例により詳しく説明する。 Hereinafter, the present invention will be explained in detail with reference to Examples.
実施例−1
ポリプロピレンホモポリマー(メルトフローインデック
ス 1−5g / 10分)をTダイ押出装置を用いて
樹脂温度270℃でシート状に押し出した。第1図の方
法で溶融シートをエアーナイフで第1冷却ロール表面に
密着させ、さらに表面をパーフルオロアルキルビニール
エーテル−テトラフルオロエチレン共重合体(GF・チ
ューブ;グンゼ社製商品名)の膜で被覆されたゴム製の
タフチロールを用いて3.Qkg/cm2の圧力で押圧
した後、冷却ロールとの非接触面側を5℃の水で冷却し
た。この時の第1冷却ロール温度は55゛Cであった。Example-1 A polypropylene homopolymer (melt flow index: 1-5 g/10 minutes) was extruded into a sheet using a T-die extruder at a resin temperature of 270°C. Using the method shown in Figure 1, the molten sheet is brought into close contact with the surface of the first cooling roll using an air knife, and then the surface is coated with a film of perfluoroalkyl vinyl ether-tetrafluoroethylene copolymer (GF tube; product name manufactured by Gunze Co., Ltd.). 3. Using a coated rubber taft roll. After pressing at a pressure of Q kg/cm2, the side not in contact with the cooling roll was cooled with water at 5°C. The temperature of the first cooling roll at this time was 55°C.
得られたシートの厚みは0.311であり、非常に透明
性の優れたものであった。各種測定結果を表−1に示す
。表中ヘイズ値はA S T M −D 1003に従
って測定した。The thickness of the obtained sheet was 0.311, and it had excellent transparency. Various measurement results are shown in Table-1. The haze values in the table were measured according to ASTM-D 1003.
比較例−1
実施例−1において、タッチロールを用いず、かつフロ
ストラインが生じるまえでの冷却を行わずにシート成形
を行ったが、透明性に劣るものであった。結果を表−1
に示す。Comparative Example 1 In Example 1, sheet molding was performed without using a touch roll and without cooling before frost lines were formed, but the transparency was poor. Table 1 shows the results.
Shown below.
実施例−2
ポリプロピレンホモポリマー(メルトフローインデック
ス4.0g / 10分)100重量部に造核剤として
ジベンジリデンソルビトール0.03重量部添加したも
のをTダイ押出装置を用いて樹脂温度250°Cでシー
ト状に押し出した。第1図の方法で溶融シートをエアー
ナイフで第1冷却ロールに密着させ、さらに表面をシリ
コン樹脂コーティングしたゴム製のタフチロールを用い
て3.5kirの圧力で押圧した後、第1冷却ロールと
の非接触面側を5°Cの冷却水で冷却した。この時の第
1冷却ロール温度は70℃であった。IMられたシート
の厚みは0.5龍であり非常に透明性の優れたものであ
った。結果を表−1に示す。Example 2 0.03 parts by weight of dibenzylidene sorbitol as a nucleating agent was added to 100 parts by weight of polypropylene homopolymer (melt flow index 4.0 g/10 minutes) and the resin temperature was 250°C using a T-die extrusion device. It was extruded into a sheet. Using the method shown in Figure 1, the molten sheet is brought into close contact with the first cooling roll using an air knife, and then pressed with a pressure of 3.5 kir using a rubber taft roll whose surface is coated with silicone resin. The non-contact surface side was cooled with cooling water at 5°C. The first cooling roll temperature at this time was 70°C. The IM-coated sheet had a thickness of 0.5 mm and had excellent transparency. The results are shown in Table-1.
比較例−2
実施例−2において、タッチロールを用いず、かつフロ
ス]・ラインが生じるまでに行なう水での冷却を行わず
、エアーナイフにより溶融シートを冷却ロールに密着さ
せるだけでシート成形を行ったが透明性に劣るものであ
った。結果を表−1に示す。Comparative Example 2 In Example 2, the sheet was formed by simply bringing the molten sheet into close contact with the cooling roll using an air knife, without using the touch roll and without cooling with water before forming the floss line. However, the transparency was poor. The results are shown in Table-1.
比較例−3
実施例−2において、タフチロールを用いながら押圧は
せずに冷却してシートの成形を行った。Comparative Example 3 In Example 2, a sheet was formed by cooling using a taft roll but without pressing.
若干の透明性改良効果は認められたが十分に満足し得る
透明シートは得られなかった。結果を表=1に示す。Although a slight improvement in transparency was observed, a fully satisfactory transparent sheet was not obtained. The results are shown in Table 1.
比較例−4
実施例−2において、エアーナイフを用いずにシート冷
却を行った。引取速度が4m/分では問題なく透明シー
トを製造できたが、引取速度を上げて6m/分にすると
溶融シートと冷却ロールの間に密着ムラを生じ、さらに
10m/分にするとシートの冷却ロール面側にかなりの
ヘイズ環を生じた。10 m /分で製造したときの結
果を表−1に示す。Comparative Example-4 In Example-2, sheet cooling was performed without using an air knife. At a take-up speed of 4 m/min, transparent sheets could be produced without any problems, but when the take-up speed was increased to 6 m/min, uneven adhesion occurred between the molten sheet and the cooling roll, and when the take-up speed was further increased to 10 m/min, the cooling roll of the sheet A considerable haze ring was formed on the surface side. Table 1 shows the results when manufacturing at 10 m/min.
実施例−3
プロピレン−エチレンランダム共i1体<エチレン含有
率2重量%、メルトフローインデックス8.0g/10
分)をTダイ押出装置を用いて樹脂温度230℃でシー
ト状に押し出した。実施例−1の方法で溶融シートのエ
アーナイフによる密着、タッチロールによる押圧後、5
℃の冷却水で冷却した。この時の第1冷却ロール温度は
55℃であった。Example-3 Propylene-ethylene random co-isomer i1<ethylene content 2% by weight, melt flow index 8.0g/10
) was extruded into a sheet using a T-die extruder at a resin temperature of 230°C. After adhesion of the molten sheet with an air knife and pressing with a touch roll by the method of Example-1, 5
Cooled with cooling water at °C. The first cooling roll temperature at this time was 55°C.
得られたシートの厚みは1.Ol−で透明性に優れたも
のであった。結果を表−1に示す。The thickness of the obtained sheet was 1. It was OL- and had excellent transparency. The results are shown in Table-1.
比較例−5
実施例−3において、タフチロールを用いず、かつフロ
ストラインが生じるまでに行なう水による冷却を行わず
、エアーナイフにより溶融シートを冷却ロールに密着さ
せるだけでシート成形を行ったが透明性に劣るものであ
った。結果を表−1に示す。Comparative Example 5 In Example 3, the sheet was formed without using a taft roll and without cooling with water, which is done before frost lines are formed, by simply bringing the molten sheet into close contact with the cooling roll using an air knife, but the sheet was not transparent. It was inferior to sex. The results are shown in Table-1.
比較例−6
実施例−3において、フロストラインよりも後方で冷却
した。若干の透明性改良効果は認められたが十分に満足
し得る透明シートは得られなかった。結果を表−1に示
す。Comparative Example-6 In Example-3, cooling was performed behind the frost line. Although a slight improvement in transparency was observed, a fully satisfactory transparent sheet was not obtained. The results are shown in Table-1.
実施例−4
ポリプロピレンホモポリマー(メルトフローインデック
ス 1.5g / 10分)93宙量部に水添石油樹脂
(商標名アルコンP −125,、荒用化学工業社製)
7重量部を添加したものをTダイ押出装置を用いて樹脂
温度280°Cでシート状に押し出した。実施例−1の
方法で溶融シートをエアーナイフで第1冷却ロールに密
着させ夕・ンチロールで押圧した後、第1冷却ロールと
の非接触面側を5℃の冷却水で冷却した。この時の第1
冷却ロール温度は60℃であった。得られたシートの厚
みは0.3svxであり非常に透明性に浸れたものであ
った。結果を表−1に示す。Example-4 Polypropylene homopolymer (melt flow index 1.5 g / 10 minutes) Hydrogenated petroleum resin (trade name Alcon P-125, manufactured by Arayo Kagaku Kogyo Co., Ltd.) in 93 air spaces
The mixture containing 7 parts by weight was extruded into a sheet using a T-die extruder at a resin temperature of 280°C. Using the method of Example 1, the molten sheet was brought into close contact with the first cooling roll using an air knife and pressed with a double-cross roll, and then the side of the sheet not in contact with the first cooling roll was cooled with cooling water at 5°C. The first at this time
The cooling roll temperature was 60°C. The thickness of the obtained sheet was 0.3 svx, and it was highly transparent. The results are shown in Table-1.
実施例−5
ポリプロピレンホモポリマー(メルトフローインデック
ス0.5g / 10分) 100重量部に有機過酸化
物として 1,3−ビス(ターシャリ−ブチルパーオキ
シイソプロピル)ベンゼン0.01ffi量部と造核剤
としてジベンジリデンソルビトールo、o3重i部を添
加し、押出温度230℃でベレット化した。このベレッ
トのメルトフローインデックスは2.0g/10分であ
った。次いでベレットを押出温度270℃でTダイより
シーI・状に押し出した。実施例−1の方法で溶融シー
トをエアーナイフで第1冷却ロールに密着し、タッチロ
ールで押圧後、第1冷却ロールとの非接触面側を5°C
の冷却水で冷却した。この時の第1冷却ロール温度は5
5°Cであった。Example-5 100 parts by weight of polypropylene homopolymer (melt flow index 0.5g/10 minutes), 0.01ffi part of 1,3-bis(tertiary-butylperoxyisopropyl)benzene as an organic peroxide, and a nucleating agent. 3 parts of dibenzylidene sorbitol were added thereto, and the mixture was pelletized at an extrusion temperature of 230°C. The melt flow index of this pellet was 2.0 g/10 minutes. The pellet was then extruded into a C shape through a T-die at an extrusion temperature of 270°C. Using the method of Example-1, the molten sheet was brought into close contact with the first cooling roll using an air knife, and after being pressed with a touch roll, the side not in contact with the first cooling roll was heated to 5°C.
Cooled with cooling water. The first cooling roll temperature at this time is 5
It was 5°C.
得られたシートの厚みは0.31111で透明性に優れ
たものであった。The thickness of the obtained sheet was 0.31111, and it had excellent transparency.
結果を表−1に示す。The results are shown in Table-1.
本発明により製造される結晶性ポリオレフィン樹脂シー
トは透明性に優れたものであり、真空成形、圧空成形等
の熱成形によって種々の形状に熱成形後、食品、化粧品
、医薬品などの透明性包装材として利用される。The crystalline polyolefin resin sheet produced by the present invention has excellent transparency, and after being thermoformed into various shapes by thermoforming such as vacuum forming and pressure forming, it can be used as transparent packaging materials for foods, cosmetics, pharmaceuticals, etc. used as.
第1図は本発明を実施するのに用いうる装置の例を示す
概念図である。FIG. 1 is a conceptual diagram showing an example of an apparatus that can be used to carry out the present invention.
Claims (1)
通してシート状に押し出し、冷却ロールで冷却固化させ
る結晶性ポリオレフィン樹脂シートまたはフィルムの製
造方法において、Tダイより押し出されたシート状物を
エアーナイフにより冷却ロール上に密着させ、さらにタ
ッチロールで該シート状物の冷却ロールとの非接触面側
を押圧した後、該シート状物に冷却固化によりフロスト
ラインが生じるまでに該シート状物の冷却ロールとの非
接触面側を冷却剤により冷却することを特徴とする透明
性の結晶性ポリオレフィン樹脂シートまたはフィルムの
製造方法。 2)冷却剤による冷却が広幅スリットより冷却水を該シ
ート状物に当てて冷却することである特許請求の範囲第
1項記載の製造方法。 3)タッチロールが鏡面を有する弾性ロールである特許
請求の範囲第1項または第2項記載の製造方法。 4)鏡面を有する弾性ロールがフッ素樹脂の膜で被覆さ
れたゴムロールである特許請求の範囲第3項記載の製造
方法。 5)フッ素樹脂がパーフルオロアルキルビニールエーテ
ル−テトラフルオロエチレン共重合体である特許請求の
範囲第4項記載の製造方法。 6)鏡面を有する弾性ロールがシリコン樹脂をコーティ
ングしたゴムロールである特許請求の範囲第3項記載の
製造方法。[Claims] 1) A sheet extruded from a T-die in a method for producing a crystalline polyolefin resin sheet or film in which a crystalline polyolefin resin is extruded in a molten state into a sheet through a T-die, and then cooled and solidified by a cooling roll. The sheet-like material is brought into close contact with the cooling roll using an air knife, and the non-contact side of the sheet-like material with the cooling roll is pressed using a touch roll. A method for producing a transparent crystalline polyolefin resin sheet or film, which comprises cooling the side of a sheet-like material that does not come into contact with a cooling roll with a cooling agent. 2) The manufacturing method according to claim 1, wherein the cooling with the coolant is performed by applying cooling water to the sheet-like material through a wide slit. 3) The manufacturing method according to claim 1 or 2, wherein the touch roll is an elastic roll having a mirror surface. 4) The manufacturing method according to claim 3, wherein the elastic roll having a mirror surface is a rubber roll coated with a fluororesin film. 5) The manufacturing method according to claim 4, wherein the fluororesin is a perfluoroalkyl vinyl ether-tetrafluoroethylene copolymer. 6) The manufacturing method according to claim 3, wherein the elastic roll having a mirror surface is a rubber roll coated with silicone resin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61059548A JPS62216717A (en) | 1986-03-19 | 1986-03-19 | Manufacture of crystalline polyolefine resin sheet or film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61059548A JPS62216717A (en) | 1986-03-19 | 1986-03-19 | Manufacture of crystalline polyolefine resin sheet or film |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62216717A true JPS62216717A (en) | 1987-09-24 |
Family
ID=13116421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61059548A Pending JPS62216717A (en) | 1986-03-19 | 1986-03-19 | Manufacture of crystalline polyolefine resin sheet or film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62216717A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006129822A1 (en) * | 2005-05-31 | 2006-12-07 | Fujifilm Corporation | Method for producing thermoplastic film and optical compensation film for liquid crystal display panels produced by using the method |
JP2009248364A (en) * | 2008-04-02 | 2009-10-29 | Sumitomo Chemical Co Ltd | Manufacturing process of film, and film |
US7927521B2 (en) | 2005-05-31 | 2011-04-19 | Fujifilm Corporation | Method for producing cellulose acylate film and optical compensation film for liquid crystal display plate produced by using the method |
-
1986
- 1986-03-19 JP JP61059548A patent/JPS62216717A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006129822A1 (en) * | 2005-05-31 | 2006-12-07 | Fujifilm Corporation | Method for producing thermoplastic film and optical compensation film for liquid crystal display panels produced by using the method |
US7927521B2 (en) | 2005-05-31 | 2011-04-19 | Fujifilm Corporation | Method for producing cellulose acylate film and optical compensation film for liquid crystal display plate produced by using the method |
JP2009248364A (en) * | 2008-04-02 | 2009-10-29 | Sumitomo Chemical Co Ltd | Manufacturing process of film, and film |
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